~~ Methods for function plot
~~
signature(x = "cdist")
Plots the conditional means and variances of an observed and an estimated bivariate test score distribution.
signature(x = "genseed")
Plots the difference between two equating functions with +/- 2*SEED boundaries for both equating from X to Y and from Y to X.
signature(x = "keout")
Plots the equated values from the equating against the score values of the equated test.